Want to try something different from Ventolin

I am an Australian asthma sufferer and have been using a Ventolin (salbutamol) reliever puffer for many years which is available to buy over the counter at pharmacies as long as you have an Asthma Card where they fill out the date you purchased the puffer.

I would really like to try another type of reliever but don't want to have to go to the doctor for a prescription. Does anyone know of any other brands of asthma reliever sprays you can buy in Australia over the counter?